Tophat Style Bung - 5/16"-18 Thread - Set of 4 - 6061 Aluminum

Tophat Style Blind Threaded Bung

The Ace Race Parts brand of Tophat Style Blind Threaded Bungs provides fabricators with a clean, reliable way to add strong mounting points to custom tanks, chassis components, and fluid-filled vessels. Each bung is precision CNC machined for symmetry and consistent fitment, ensuring an easy, repeatable installation on a wide range of fabrication projects.

Designed with a blind threaded interior, these bungs prevent fluid seepage into the threads, making them ideal for components such as fuel tanks, oil tanks, breather tanks, intercooler reservoirs, and other pressure or fluid-containing assemblies. The integrated “top hat” flange offers a stable welding surface and keeps standoff height consistent during fit-up.

Machined from high-quality 6061-T6 aluminum (or mild steel, depending on SKU), these bungs offer excellent weldability, strength, and corrosion resistance. Whether you’re building a custom motorcycle, hot rod, drift car, off-road rig, or race vehicle, tophat bungs add secure mounting points without compromising the integrity of the container.

FEATURES

• Blind threaded design prevents internal fluid leaks
• Precision CNC machined for accuracy and alignment
• Available in 6061-T6 aluminum
• Ideal for mounting fuel tanks, oil tanks, breather tanks, and other fabricated components
• Flanged “tophat” profile ensures proper standoff and easy positioning
• Excellent weldability for fabrication and motorsport applications